import java.util.InputMismatchException;
import java.util.Scanner;

// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
// then press Enter. You can now see whitespace characters in your code.
public class Main {
	public static void main(String[] args) {
		Scanner scanner=new Scanner(System.in);
		double a,b;
		while(true){
			try {
				System.out.println("please enter numbers a and b (not 0)");
				System.out.println("We will tell you a/b");
				a=scanner.nextDouble();
				b=scanner.nextDouble();
				System.out.println(a/b);
			}
			catch (InputMismatchException inputMismatchException){
				break;
			}
		}
	}
}